파이썬을 사용하여 CSV 파일을 읽는 동안 빈 줄을 건너 뛰는 방법

이것은 내 코드로 각 줄을 인쇄 할 수 있지만 빈 줄이 나타나면 인쇄됩니다. CSV 파일 형식으로 인해 빈 줄이 나타나면 건너 뛰고 싶습니다.

import csv
import time

ifile = open ("C:\Users\BKA4ABT\Desktop\Test_Specification\RDBI.csv", "rb")
for line in csv.reader(ifile): 
    if not line: 
        empty_lines += 1 
        continue
    print line

 

해결 방법

 

모든 공백 줄을 건너 뛰려면 ''.isspace () 테스트를 사용해야합니다.

공백이 아닌 줄을 콘솔에 인쇄하는 것보다 더 복잡한 작업을 수행 할 수 있으므로 (CSV 모듈을 사용할 필요 없음) 다음은 DictReader와 관련된 예제입니다.

#!/usr/bin/env python
# Tested with Python 2.7

# I prefer this style of importing - hides the csv module
# in case you do from this_file.py import * inside of __init__.py
import csv as _csv


# Real comments are more complicated ...
def is_comment(line):
    return line.startswith('#')


# Kind of sily wrapper
def is_whitespace(line):
    return line.isspace()


def iter_filtered(in_file, *filters):
    for line in in_file:
        if not any(fltr(line) for fltr in filters):
            yield line


# A dis-advantage of this approach is that it requires storing rows in RAM
# However, the largest CSV files I worked with were all under 100 Mb
def read_and_filter_csv(csv_path, *filters):
    with open(csv_path, 'rb') as fin:
        iter_clean_lines = iter_filtered(fin, *filters)
        reader = _csv.DictReader(iter_clean_lines, delimiter=';')
        return [row for row in reader]


# Stores all processed lines in RAM
def main_v1(csv_path):
    for row in read_and_filter_csv(csv_path, is_comment, is_whitespace):
        print(row)  # Or do something else with it


# Simpler, less refactored version, does not use with
def main_v2(csv_path):
    try:
        fin = open(csv_path, 'rb')
        reader = _csv.DictReader((line for line in fin if not
                                  line.startswith('#') and not line.isspace()),
                                  delimiter=';')
        for row in reader:
            print(row)  # Or do something else with it
    finally:
        fin.close()


if __name__ == '__main__':
    csv_path = "C:\Users\BKA4ABT\Desktop\Test_Specification\RDBI.csv"
    main_v1(csv_path)
    print('\n'*3)
    main_v2(csv_path)

 

참조 페이지 https://stackoverflow.com/questions/18890688